It was actually the main judging arena at the 1990 Sydney Royal Easter Show.
The pilot's name is Ross Rundle. They did hundreds of these shows around Oz as a recruiting campaign.
In many of the shows, Snoopy's handler was a female clerk from the Oakey Aviation Base in QLD.
I doubt that it could happen now as the Army hasn't funds to purchase enough Queen's Kerosene for day to day use, much less for fancy recruiting displays.